Stage construction

ABSTRACT

The invention relates to a stage, comprising elements, which may be assembled and disassembled from individual pieces, as part of a sub-structure with telescopic pieces ( 14, 15 ) and bars ( 11, 12, 13 ) fixed thereto, at various angles to the horizontal, to which may be fixed stepped elements for the attachment of superstructure pieces such a seats and railings. Said bars ( 11, 12, 13 ), may be pivoted about a pivot point ( 23, 24, 25 ), in the region of a first end ( 16, 17, 18 ) of a bar ( 11, 12, 13 ), in a manner independent of the angle to the horizontal. Each individual bar ( 11, 12, 13 ) comprises a first attachment point for stepped elements and the pivot point ( 23, 24, 25 ) of a bar ( 11, 12, 13 ) is either congruent with the first attachment point ( 26 ) or it is immediately adjacent to the pivot point ( 23, 24, 25 ).

The invention concerns a transportable stand with elements which can beassembled from individual parts and be dismounted, which comprise asupporting structure and telescopic parts and cheeks which can bemounted thereon at different angles of inclination to the horizontal,which hold step elements for installation of mounting parts such asseats and rails.

BACKGROUND OF THE INVENTION

A stand construction of this type has been disclosed by a stand of thecompany Arena Seating.

In the conventional stand construction, cheeks are mounted to asupporting structure, which are either prolonged or shortened, throughtelescopic elements, at both ends depending on the inclination of thecheeks to the horizontal. The known cheeks can be used at differentinclinations by providing mounting means for step elements on one cheekside and also on the cheek side diametral thereto with differentseparations from the respective cheek end.

To be able to offer an extended number of seats and more standing spaceat venues or in halls, transportable stands are known which consist of aplurality of individual parts and require a lot of time for assemblyand/or disassembly. The individual stand parts are often large and heavysuch that the stands, which are usually to be mounted without theassistance of a crane, are difficult to handle.

It is the underlying purpose of the invention to design stands which canbe used according to the local requirements with easy assembly and/ordisassembly and to reduce the number of or simplify the differentelements required for assembly and/or disassembly.

SUMMARY OF THE INVENTION

This object is achieved in accordance with the invention in that thecheeks can be pivoted independently of the angle of inclination to thehorizontal about a point of rotation which lies in the region of a firstcheek end, and that each individual cheek has a first receiving pointfor the step elements which either coincides with the point of rotationor is disposed directly next to the point of rotation.

The stand construction comprising the inventive cheeks is advantageousin that step elements to be mounted to the cheeks always have a fixedpredetermined first receiving point independent of the angle position ofthe cheeks to the horizontal where the first or last step element ismounted. Mounting of the inventive stand precludes or greatly reduceserroneous assembly of individual parts required for assembly since thescreen for the step elements to be disposed on the cheeks always startsor terminates at the same first receiving point. An inventive cheek mustbe prolonged or shortened at only one end since the step elements usedalways terminate in the fixed first receiving point. The first receivingpoint for the step elements is also always the same, independent of therespective inclined position of a cheek. The first receiving point isnot displaced in height and does not carry out a lateral motion when theangle positions of the cheeks vary. The bringing together of the pointof rotation of a cheek in a different angle position and the firstreceiving point of a cheek for a step element further simplifies theoverall construction. In total, the inventive construction reduces thenumber of elements required for assembling a stand and also reduces thenumber of different concrete designs of the elements.

In a further embodiment of the invention, the point of rotation has thesame separation from the first end of the respective cheek irrespectiveof the length of a cheek. This is advantageous in that all inventivecheeks used in the stand construction are moved, i.e. pivoted, in thesame fashion to obtain the predetermined end position of a cheek desiredin the assembled state. If the points of rotation are equally fixed toeach cheek, the overall stand structure is simplified.

In a further embodiment of the invention, the cheeks, telescopic parts,step parts and mounting parts can be joined to one another or joined tothe supporting structure via secured plug and/or catch connections.

This is advantageous in that no loose individual parts are used forassembly of the stand and additional time-consuming screwing or wedgingcan be omitted. All connecting parts such as cheeks, step elements,telescopic parts, receiving heads, securing means, seat and/or railconnections can be coated with elastic surfaces and/or with elasticformations, profiles to connect the overall construction or individualconnections of this construction in a sound-proof, in particularimpact-sound-proof, sealed or play-free fashion. This measure eliminatesnoise which could be produced by individual elements under load.

In a further embodiment of the invention, the plug and/or catchconnections are formed such that they are self-locking when connectedwhich guarantees permanent secure assembly of the stand since securityand safety checks are not required for a stand built with the inventiveelements.

In a further embodiment, receiving heads are formed on the supportingstructure of the inventive stand design, which receive the first end ofa cheek and/or an end of the telescopic part.

This is advantageous in that no particular connecting elements arerequired between supporting structure and the cheeks to be mountedthereto. The receiving heads can securely and permanently hold thecheeks at the most different inclinations without additional screwing orbolting or wedging.

The receiving heads are formed to receive cheeks and telescopic partswhich can be oriented at least at two different angles of inclination tothe horizontal such that the same receiving heads can be used for anystand construction.

In a preferred embodiment of the invention, the receiving heads, holdinga first end of a cheek, hold bolts which laterally project from thecheeks, wherein in the assembled state of the parts at least one bolt isoverlapped by the respective receiving head and the bolts additionallyproject into a cavity which is limited by cheeks produced from a hollowsection. One end of a telescopic part projects into this cavity and atleast partially surrounds the bolts or rests on the bolts. Thetelescopic head of the telescopic part may be supported on the innersurface of a cheek for load relief and further means can be provided toconnect and secure the connection to be created for forces acting in thehorizontal direction.

This measure produces simple, permanent and safe connectingpossibilities. The connections can be quickly formed and released withsimple movements.

In a further development of the invention, recesses or mounting pointsare provided on an outer side of the cheek at defined separations intowhich profiled ends of the step elements engage or the profiled ends aremounted at the mounting points.

This is advantageous in that the step elements can be securely held onthe cheeks via the most simple mounting means. Such cheeks can beproduced at low cost and are easy to handle.

If the recesses are formed as openings of approximately twice the lengthof a width of a profiled end, laterally adjoining step elements can beintroduced at one cheek. Only one opening is required at one cheek forboth step elements. In a preferred embodiment, at least one of theprofiled ends of a directly adjoining skeleton step or riser projectsinto the hollow section of the individual cheek and is immovably held onthe cheek in a self-locking fashion or via fixing elements. This isadvantageous in that the compelling sequence of the elements to bemounted, prevents having to work over gaps when the skeleton steps andrisers are disposed on the cheeks.

The overall stand system is further facilitated if the step elements areformed from risers and skeleton steps, wherein the skeleton steps havethe same step depth irrespective of the inclination of a cheek to thehorizontal, and if openings are provided at the step edge bordering therisers for receiving the mounting elements. The same skeleton steps areused for any angle position of a cheek, and the step elements haveopenings for receiving seats or rail constructions. The seats or railsmust be inserted into the openings provided for this purpose and areheld in the openings in a self-locking fashion. The risers can also besimplified if they can be folded at some height and thus be adjusted tothe most different angle positions of the cheeks in a simple way. Thefoldable section to extend a riser can be hinged to the skeleton stepand/or the riser itself. For different angle positions of the cheeks,risers of different heights are provided. If e.g. cheeks of a length of2.50 m are used for mounting a stand on a supporting structure with 50cm height grid, and the step elements are mounted to the cheeks inaccordance with the invention, skeleton steps of a step depth of 75 cmcan be used for different angle positions of 0°, approximately 11° andapproximately 22° and the risers have a height of 15 cm for an angleposition of the cheeks of approximately 11° and, for an angle positionof the cheeks of approximately 22°, a height of 30 cm.

If the smallest common multiple of step depth and a grid width of thesupporting structure is larger than a grid width but smaller thanapproximately five times the grid width, all desired angles ofinclination of a stand can be produced with one single embodiment of acheek. In a preferred embodiment, with a uniform cheek length of 2.50 m,platforms are possible after every three grid widths. If cheeks ofdifferent lengths are combined, horizontally oriented platforms can beproduced in shorter recurrent separations. To provide safe escape pathswith the inventive stand construction, horizontally oriented cheeklengths of 75 cm are sufficient when they are connected to inclinedcheeks of a length of 2.50 m. If the angle position of an inclined cheekis approximately 11°, the cheek must be prolonged to approximately 2.55m through the telescopic part. If the angle position of a cheek isapproximately 22°, the cheek is to be extended to approximately 2.69 mthrough a telescopic part. The predetermined lengths refer to ahorizontally oriented cheek (0°) of 2.50 m and a height grid of 50 cm or100 cm at the supporting structure.

Further advantages can be extracted from the description and theenclosed drawing. The features mentioned above and below can be used inaccordance with the invention either individually or collectively in anyarbitrary combination. The embodiments mentioned are not to beunderstood as exhaustive enumeration but rather have exemplary characterfor describing the invention. The step elements can be mounted on anytype of cheeks. The described step elements must not necessarily be usedwith the described cheeks.

If rail posts are mounted to the step elements, these rail posts can beinserted into cavities of the skeleton steps and/or risers and furtherfixing and/or securing of the rail posts can be effected throughengagement into the openings in the cheeks. The skeleton steps andrisers can also be of one piece such that a step element is formed fromone single element.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is shown in one embodiment in the drawing:

FIG. 1 shows an inventive cheek connection with receiving heads;

FIG. 2 shows the inventive cheek connection of FIG. 1 on an enlargedscale;

FIG. 3 shows a perspective view of inventive cheek elements withinventive step elements shown in sections;

FIG. 4 shows a connection between an inventive cheek and an inventivetelescopic part with the possibility to mount and dismount an inventivestep element;

FIG. 5 shows the connection of a telescopic part to a first cheek end;

FIG. 6 shows a side view of a further inventive embodiment of a cheekconnection with two skeleton steps and one riser;

FIG. 7 shows a side view of FIG. 6 on an enlarged scale showing theconnection of a telescopic part to a cheek;

FIG. 8 shows a perspective view of a skeleton step in accordance withFIGS. 6 and 7 adjoining a horizontally oriented cheek;

FIG. 9 shows a sectional representation of a skeleton step which isseated and secured on a horizontally oriented cheek;

FIG. 10 shows a rear view of a riser and skeleton step which seats on ahorizontally oriented cheek.

DETAILED DESCRIPTION

In FIG. 1, reference numeral 10 illustrates elements of a stand whichcan be mounted and dismounted, comprising a first cheek 11, a secondcheek 12 and a third cheek 13. The cheeks 11, 12, 13 are interconnectedvia a first telescopic part 14 and a second telescopic part 15. Thefirst cheek 11, the second cheek 12 and the third cheek 13 are held at afirst end 16, 17, 18 of the cheeks 11, 12, 13 via receiving heads 19which are supported by a supporting structure, e.g. a scaffoldstructure. The supporting structure is a construction known from thestate of the art which is therefore not shown in FIG. 1.

In FIG. 1, the first cheek 11 is inclined to a first angle position 20i.e. at an angle of inclination to the horizontal of e.g. approximately22°. The second cheek 12 is shown in a second angle position 21, e.g. 0°and the third cheek 13 is shown in a third angle position 22, inclinedto the horizontal by approximately 11°.

The cheeks 11, 12, 13 serve for mounting step elements which generallyconsist of skeleton steps and risers. Mounting parts such a seats andrails can be mounted to the step elements which are not shown in thefigure.

The cheeks 11, 12, 13 of the inventive stand construction can be pivotedabout points of rotation 23, 24, 25 which are in the region of the firstends 16, 17, 18. In the region of the first ends 16, 17, 18, holdingmeans are provided on the cheeks 11, 12, 13 which are received by thereceiving heads 19. The cheeks 11, 12, 13 are formed of a hollowsection. The ends of the cheeks 11, 12, 13, opposite to the first ends16, 17, 18, are provided with telescopic parts 14, 15 for connection toa further cheek and for interconnecting the adjoining cheeks 11, 12, 13.The telescopic parts 14, 15 can be drawn out of the respective cheekends to different lengths and be fixed in any position to keep a gridwidth predetermined by the supporting structure or the horizontallyoriented cheek length in dependence on a predetermined angle ofinclination to the horizontal. If step elements are disposed on thecheeks 11, 12, 13, these step elements are disposed irrespective of theangle of inclination to the horizontal of a cheek 11, 12, 13 always suchthat the first or last step element is mounted in a first receivingpoint 26 (depending on the direction of assembly) which coincides withthe point of rotation 23 or is formed directly next to the point ofrotation 23.

FIG. 1 shows two cheek lengths. The length of the first cheek 11corresponds to the length of the third cheek 13, the second cheek 12 forthe second angle position 21 of 0° is shorter than the first cheek 11and the third cheek 13. The angle position 20 is approximately 22° andthe angle position 22 is approximately 11°.

FIG. 2 shows, compared to FIG. 1, an enlarged view of the cheeks 11, 12,13. The cheeks 11, 13 are displayed shortened for a better overview. Thecheeks 11, 12, 13 are interconnected via the first telescopic part 14and the second telescopic part 15. The receiving heads 19 hold thecheeks 11, 12, 13 at the first end 16, 17, 18 in that bolts 27, 28, 29formed on the cheeks 11, 12, 13 engage in recesses of the receivingheads 19. The bolts 27, 28, 29 are disposed on a circular arc whosecenter is in the point of rotation 23, 24, 25. The radius from the pointof rotation 23, 24, 25 to the circular arc with the bolts 27, 28, 29 isalways the same in the inventive cheeks 11, 12, 13. The position of thebolts 27, 28, 29 on the circular arc may differ depending on the desiredinclination of the cheeks 11, 12, 13 within an overall standconstruction. The recesses, formed on the receiving heads 19, for thebolts 27, 28, 29 are selected such that they can receive the bolts 27,28, 29 in different angle positions of the cheeks 11, 12, 13 and aredesigned such that at least one bolt 27, 28, 29 is overlapped by ahook-shaped end 30 of a receiving head 19. The hook-shaped ends 30 ofthe receiving heads 19 secure the connection between the receiving head19 and a cheek 11, 12, 13 from inadvertent release of the connectionbetween receiving head 19 and the cheek 11, 12, 13.

FIG. 3 shows a partial spatial section of an inventive standconstruction with step elements 31 which are composed of skeleton steps32 and risers 33. The step elements 31 can be detachably mounted to thecheeks 11, 12, 13 in that profiled ends of the step elements 31 engagein openings 34 of the cheeks 11, 12, 13 which are formed on a cheek side35, 36, 37. The openings 34 formed on the cheek side 35, 36, 37 areseparated from each other such that skeleton steps 32 with the same stepdepth can be mounted in or on the openings 34 independent of the angleposition of the individual cheeks 11, 12, 13, and a first step elementis always mounted in the first receiving point. The telescopic parts 14,15 comprise a mandrel 38 which can also engage in the openings 34 andwhich can determine the length of the telescopic part 14, 15 to beselected. A telescopic head 39 of the first telescopic part 14 ispartially visible in FIG. 3. The telescopic head 39 connects the firstcheek 11 to the second cheek 12. The supporting structure which is notshown in FIG. 3 holds the cheeks 11, 12, and 13 via the receiving heads19.

In the transition region between a skeleton step 32 and a riser 33, aseries of openings 40 are provided which can receive mounting elementssuch as seats and rails.

FIG. 4 shows the transition region between a first cheek 11 and a secondcheek 12, partially in sectional view such that the profiled ends 41, 42of the skeleton steps and risers 32, 33 are visible and also thesecuring lock 43 of the first telescopic part 14. The profiled end 41 ofthe skeleton step 32 engages through one of the openings 34 and engagesbehind the first cheek 11 with the free end. The profiled end 42 of theriser 33 also engages in the opening 34 and is designed such that incooperation with the profiled end 41, it blocks or prevents verticaldisplacement of skeleton step and riser 32, 33. The numerous openings 34formed in the first cheek 11 are provided for the step elements 31 whenthe cheeks 11, 12 are mounted in different angle positions. With themandrel 38, the first telescopic part 14 engages through an opening 34and is supported at one end via the telescopic head 39 on the secondcheek 12. The telescopic head 39 comprises additionally the securinglock 43 which secures connection between the first telescopic part 14and the second cheek 12. The first telescopic part 14 is supported onthe other end via a supporting plate 44 on the inner surface of thefirst cheek 11.

The bolts 27, 28, 29 serve as holding means for the receiving head 19 aswell as for the telescopic head 39. The bolts 27, 28, 29 project pastthe cheek outside and into the hollow section of the cheek 12 such thatthe telescopic head 39 can at least partially surround the bolts 27, 28,29. FIG. 4 shows the securing lock 43 in a position in which the firsttelescopic part 14 is undetachably connected to the second cheek 12.

If a supporting structure with mounted cheeks 11, 12 is erected and thecheeks 11, 12 have mounting points like the openings 34 shown in FIG. 4,the skeleton steps and risers 32, 33 can be mounted to the cheeks 11, 12such that no auxiliary construction or additional means is required. Theskeleton step 32 is disposed on the second cheek 12 in the direction ofthe arrow 45 by pivoting the skeleton step 32 such that the profiled end41 engages in the opening 34 and engages behind this opening 34. If theskeleton step 32 is positioned, the riser 33 can be inserted into theopening 34 by pivoting it in the direction of the arrow 46. If the riser33 is vertically oriented and the profiled ends 41, 42 engage in theopening 34 as shown in the figure and the skeleton step 32 is hookedwith the riser 33 through the mutual engagement, the skeleton step 32and the riser 33 are rigidly and undetachably connected to the secondcheek 12. If the riser 33 shall be released from the second cheek 12,the riser 33 must be pivoted against the direction of arrow 46 that farthat the profiled end 42 can be removed from the opening 34. If theriser 33 has been removed from the opening 34, the skeleton step 32 canbe released through motion of the skeleton step 32 against the directionof arrow 45 from the second cheek 12.

If a further skeleton step 32 shall be disposed on a vertically orientedriser 33, this skeleton step 32 is to be disposed on the riser 33through a pivoting motion in the direction of arrow 47. When theskeleton step is disposed on the riser 33, nubs and noses engage behindthe end of the riser 33 such that the skeleton step 32 is undetachablyconnected to the riser 33. The skeleton step 32 can be released from theriser 33 only via a motion against the direction of arrow 47. Themounting and dismounting of the skeleton step and risers 32 and 33described for a step element 31 can be transferred arbitrarily to a stepelement adjoining a step element 31 such that the described assembly anddisassembly of skeleton step and risers 32, 33 can produce standconstructions of any height and length.

FIG. 5 shows a cross-sectional view of the first cheek 11 and secondcheek 12 to show the connection of the telescopic head 39 to the secondcheek 12. The securing lock 43 is kept in the telescopic head 39 suchthat it can be lifted and displaced in the direction of arrow 49. In theposition shown in the figure, the telescopic head 39 overlaps the bolts27 and 28 with recesses formed on the telescopic head 39 and thesecuring lock 43 is shown in an end position in which the firsttelescopic part 14 is undetachably connected to the second cheek 12. Ifthe securing lock 43 is displaced into the other end position in theelongate hole 48, the connection between the second cheek 12 and thefirst telescopic part 14 can be released. The skeleton step 32 and theriser 33 are inserted in the second cheek 12 in a self-locking fashionand a projection 50 is formed on the riser 33 which can house theopenings 40 shown in FIG. 3.

If the skeleton step 32 is connected to the riser 33, a ball formed onthe riser 33 is disposed in a socket of a ball and socket joint, whichis formed in the edge region of the skeleton step 32. Both theball-shaped and the socket-shaped formation can extend across the entirelength of a skeleton step and/or riser 32, 33. A projection formed onthe socket engages behind or into a recess on the ball of the riser 33to produce an undetachable connection between skeleton step and riser32, 33. If the connection between the skeleton step and riser 32, 33 inthe lower region, i.e. in the region of the cheek shall be released, theball must at first be turned out or displaced out of the overlapping orlocking engagement in the socket until both parts can be separated.

FIG. 6 shows a further embodiment of inventive elements of a stand whichcan be mounted and dismounted. The first cheek 11 is connected to asecond cheek 12 via the telescopic part 14. A skeleton step 62 which isdetachably connected to a riser 63 is disposed on the cheek 12 which isheld in its horizontally oriented position by a receiving head 19. Afurther skeleton step 62 is held at the upper end of the riser 63, andthe other end of the further skeleton step 62 flatly rests on theinclined cheek 11. Another riser 63 joins this end which has the sameconnection to the skeleton step 62 as shown in the right part of FIG. 6.

The cheek 12 has an opening 64 via which a pin 65 of an end profile ofthe skeleton step 62 engages. The end profile of the skeleton step 62has a catch 66 which engages behind an edge projection of the cheek 12and undetachably connects the skeleton step 62 to the cheek 12. Areceiving pocket 67 is formed on the end profile of the skeleton step 62opposite to the pin 65 into which the lower end profile of the riser 63engages in a detachable fashion. The upper end of the riser 63 isprovided with a further end profile with a recess 68 which holds a freeend of the skeleton step 62 which is not supported on a cheek 11, 12.

If a step element is to be disposed on an inventive cheek connection, atfirst the skeleton step 62 is disposed on the horizontally orientedcheek 12 in that the pin 65 is inserted into the opening 64. With thisinserting motion, one end of the catch 66 engages automatically in afree edge of the cheek 12. If a riser 63 is to be inserted into thereceiving pocket 67 of the skeleton step 62, the riser 63 is disposed atan angle on the end of the skeleton step 62 in that the erected skeletonstep 62 subtends an angle <90° with the riser 63. Subsequently, theriser 63 is pushed past the skeleton step 62 that far that the riser 63falls into the receiving pocket 67. In the still present inclinedposition of the riser 63, the riser 63 is lifted and simultaneouslyvertically oriented in the direction of arrow 69 in an anticlockwisedirection. Subsequently, the riser 63 is lowered and is held in thereceiving pocket 67 in a position shown in FIG. 6. If a further skeletonstep 62 is to be connected to the riser 63 at the upper end of the riser63, a skeleton step 62 is vertically oriented and inserted into therecess 68 and subsequently lowered in an anticlockwise direction in thedirection of arrow 70 that far until the other free end of the skeletonstep 62 with the pin 65 engages into the opening 64 of the inclinedcheek 11. The end profile of the skeleton step 62 is formed such that itcan flatly abut on an inclined cheek 11.

If a riser 63 is inserted into the receiving pocket 67 and verticallyaligned it blocks the pivoting region of the catch 66 and holds thecatch 66 such that a free end of the catch 66 always engages behind afree edge section of the cheek 11, 12. In the arrangement shown in FIG.6, the skeleton steps 62 cannot be lifted from the cheeks 11, 12.

If a step element is to be lifted from a cheek connection shown in FIG.6, the riser 63 must firstly be lifted in the receiving pocket 67 untilit can be turned out of the receiving pocket 67 in a clockwisedirection. If the connection between the skeleton step 62 and the riser63 is interrupted in that the receiving pocket 67 is free, the catch 66is also pivotable and the skeleton step 62 can be lifted from the cheek11, 12. When lifting the skeleton step 62, the catch 66 automaticallyopens i.e. it releases the engagement on the cheek 11,12.

FIG. 7 shows the cheek connection of the cheeks 11 and 12 with a cutcheek 12, how the two cheeks 11 and 12 are interconnected via thetelescopic part 14. The skeleton step 62 is disposed on the cheek 12 inthat the pin 65 engages in the opening 64 of the cheek 12. The endprofile of the skeleton step 62 is undetachably held together with thecheek 12 via the catch 66. An end of the riser 63 is inserted into thereceiving pocket 67 of the end profile of the skeleton step 62. Theriser 63 is vertically oriented and the receiving pocket 67 is formedsuch that it comprises a free space when a riser 63 is inserted into thereceiving pocket 67. The free space permits that the vertically alignedriser 63 can be lifted in the receiving pocket 67. If the riser 63 islifted, it engages behind a hook-shaped formation on the end profile ofthe skeleton step 62, and in the lifted state of the riser 63 it ispossible to pivot the riser 63 in a clockwise direction such that it canbe removed from the receiving pocket 67. When the riser 63 is verticallyoriented and inserted in the receiving pocket 67, the catch 66 cannot bemoved and connects the skeleton step 62 with the cheek 12 or cheek 11 inan undetachable fashion.

FIG. 8 shows a perspective view of a shortened and horizontally orientedcheek 12 onto which a skeleton step 62 is disposed. FIG. 8 does not showthe entire width of the skeleton step 62. A skeleton step 62 basicallyhas in each free end region two opposing support points with pins 65which engage in openings 64 of a cheek 12 in each case. FIG. 8 showsonly one cheek 12. The skeleton step 62 engages via the pin 65 into theopening 64, and when the skeleton step 62 is disposed on the cheek 12,an end of the catch 66 engages behind a free edge section of the cheek12. The catch 66 is fastened on the skeleton step 62 such that it can bepivoted about an axis 71. The receiving pockets 67 are indicated in thefigure into which ends of risers 63 can engage. If the skeleton step 62is lifted from the cheek 12, the catch 66 automatically pivots in thatit releases the engagement on the cheek 12. The skeleton step 62 canalways be lifted from the cheek 12 when the receiving pocket 67 is notoccupied by a riser 63.

FIG. 9 shows a sectional representation of a skeleton step 62 disposedon a cheek 12. The pin 65 of the skeleton step 62 engages in the opening64 of the cheek 12 and the catch 66 engages behind a free edge sectionof the cheek 12 by correspondingly turning about the axis 71.

FIG. 10 shows a rear view of a skeleton step 62 and a riser 63 disposedon the one cheek 12 on a side. The catch 66 engages behind a free edgesection of the cheek 12, and in the arrangement shown, the skeleton step62 cannot be lifted from the cheek 12.

In a stand with elements which can be mounted and dismounted fromindividual parts, and which comprise a supporting structure andtelescopic parts 14, 15 which can be mounted thereon at differentinclinations to the horizontal, and cheeks 11, 12, 13 which hold stepelements for mounting mounting parts such as seats and rails, the cheeks11, 12, 13 can be pivoted independently of the inclination to thehorizontal about a point of rotation 23, 24, 25 which is located in theregion of a first end 16, 17, 18 of a cheek 11, 12, 13. Each individualcheek 11, 12, 13 has a first receiving point for step elements and thepoint of rotation 23, 24, 25 of a cheek 11, 12, 13 either coincides withthe first receiving point 26 for the step elements or it is directlyneighboring to the point of rotation 23, 24, 25.

What is claimed is:
 1. A transportable stand for assembly anddisassembly on a supporting structure, such as a scaffold or the like,the stand comprising: a plurality of cheeks; a plurality of stepelements supported by the cheeks, the step elements including steps andrisers for mounting of seats and rails; a plurality of telescopic parts,each telescopic part being received in a corresponding cheek andextendable therefrom; a plurality of receiving heads for pivotablyconnecting adjacent cheeks and telescopic parts and enabling the cheeksto be pivoted irrespective of an inclination to a horizontal aboutpoints of rotation disposed at ends of each cheek, each cheek having aplurality of openings for receiving one of the step element.
 2. Thestand according to claim 1 wherein the points of rotation are equallyspaced apart from first ends of respective cheeks independent of cheeklength.
 3. The stand according to claim 2 further comprising plug andcatch connectors for joining the cheeks, telescopic parts, and stepelements with one another, said plug and catch connectors being integralwith the cheeks, telescopic parts and step elements.
 4. The standaccording to claim 3 wherein said plug and catch connectors areself-locking.
 5. The stand according to claim 4 wherein said plug andcatch connectors are disposed in a spaced apart relationship on thecheeks and the plugs comprise profiled ends of the step elements.
 6. Thestand according to claim 5 wherein the catch connectors compriserecesses having approximately twice a length of a width of a profiledend.
 7. The stand according to claim 2 wherein said receiving heads areformed on said supporting structure.
 8. The stand according to claim 7wherein said receiving heads connect cheeks and telescopic parts at, atleast, two different inclination angles to the horizontal.
 9. The standaccording to claim 8 further comprising head bolts projecting laterallyfrom the cheek ends for engaging the receiving heads.
 10. The standaccording to claim 1 wherein the steps have a same depth irrespective ofthe inclination of a cheek to the horizontal and openings are providedat an edge of each step bordering each riser for receiving mountingelement of seats and rails.
 11. The stand according to claim 10 whereinthe risers have different heights.
 12. The stand according to claim 10wherein a smallest common multiple of a step depth and a grid width ofthe supporting structure is larger than the grid width but smaller thanapproximately five times the grid width.